The isolation with the elliptical one word presents it substantial bodyweight and emphasis, giving an abrupt stop and creating this line more shocking into the reader. It is also juxtaposed with the greater romantic imagery and reference to the “marriage ceremony ring” which precedes it - Blunt/Subject of actuality = https://poemvalentinesday07406.webbuzzfeed.com/32987740/the-ultimate-guide-to-valentine-poem-for-my-boyfriend